If I am understanding the question, you are asking if, for example, lines build from 0 to 30 minutes at an attraction during the first hour of operation when the MK opens at 9:00, does an 8:00 opening mean that everything gets pushed up so that the line builds from 0 to 30 minutes between 8:00 and 9:00, the answer is "not really". Not everyone who could get to RD at 9:00 can get to RD at 8:00. The first hour of park operation at 8:00 (even on non-EMH days) is much more quiet than the first hour on a day when it opens at 9:00. During the most crowded times of the year, this decrease in crowding is less noticeable by the time you get to 8:30. But 8:00-8:25 is still markedly different than 9:00-9:25 would be. Make sense?